All the blood Bogdanov used in his experiments might have been contaminated, because he never tested any of it.  - We use all / most to talk about things in general, and all of the / most of the to talk about specific things., Until 1973, all cars used leaded petrol. - We use a plural or uncountable noun after all / all of the, Everybody wants to reverse the ageing process, so Bogdanov had a lot of supporters. - We use a singular verb (and no noun) after everything / everybody , But all of them wanted to leave their mark in science. - We use an object pronoun (NOT a subject one) after all of / most of / both of / either of / neither of , No scientist can predict how their experiments affect the future of science. - We use no / any + a noun, Unfortunately, there weren't any guinea pigs at Bogdanov's disposal, so he had to perform transfusion on himself. - We use no + noun after a positive verb, but any + noun after a negative verb, Has any of these scientists lived up to be 100 years old? - No, none. - We usually use none (without a noun or a pronoun) in short answers, Any scientist can make a fatal mistake. - We use any / anything / anyone to say that it doesn't matter what / who / etc., Both Sir Humphry Davy and Thomas Midgley used to breathe in toxic substances. - We use both / neither with a positive verb, Neither Thomas Midgley nor General Motors were/was prepared to admit how dangerous lead was. - We use both with a plural noun, and neither with singular or plural verb,

Quantifiers - all / every / both

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النمط البصري

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